I need a 7-10 microfarad non-polarized capacitor @100vac or greater to replace a resistance line cord. Does anyone know where I can find one (or more)?

Hi Joe

You could try Digi-Key, digikey.com. Two electrolytics, in series, back to back will work. It's best to put a diode across each.

Using a capacitor does have some problems. The capacitors will stay cool but turn on surge will be hard on filaments and lamps. You will need zener diodes across any lamps in your radio.

Norm

: I need a 7-10 microfarad non-polarized capacitor @100vac or greater to replace a resistance line cord. Does anyone know where I can find one (or more)?

Hi Joe, Look into motor run capacitors. They should be available in this capacitance range and are made to pass considerable current at mains voltage. Physical size may be a problem. Don Black.

: Hi Joe

: You could try Digi-Key, digikey.com. Two electrolytics, in series, back to back will work. It's best to put a diode across each.

: Using a capacitor does have some problems. The capacitors will stay cool but turn on surge will be hard on filaments and lamps. You will need zener diodes across any lamps in your radio.

: Norm

:

:
: : I need a 7-10 microfarad non-polarized capacitor @100vac or greater to replace a resistance line cord. Does anyone know where I can find one (or more)?

Norm, three questions:

1. If using two electrolytics back to back would you, say, connect minus to minus and then the pluses in series with the circuit to be dropped? I would think you could do it the other way too, connecting the pluses together.
2. How do you orient the diodes (cathode towards what) across the caps?
3. Could you eliminate the turn-on surge by also putting a surge protector or thermistor in series with the caps? Would that eliminate the need for zener diode?
Thanks,
Reece

: Hi Joe

: You could try Digi-Key, digikey.com. Two electrolytics, in series, back to back will work. It's best to put a diode across each.

: Using a capacitor does have some problems. The capacitors will stay cool but turn on surge will be hard on filaments and lamps. You will need zener diodes across any lamps in your radio.

: Norm

:

:
: : I need a 7-10 microfarad non-polarized capacitor @100vac or greater to replace a resistance line cord. Does anyone know where I can find one (or more)?

Try the ceiling fan section of your nearest Home Depot. That's where I bought a dual 3mfd + 6.5mfd capacitor rated at 250wvdc recently. Manufacturer = Fantec, Inc., Baton Rouge, LA.

Sorry. My earlier message should have read 250wvac instead of 250wvdc.